Battery filling vent



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n This invention" relates ftol filling s and venting 'devices for kelectric storage batteries'fmore paringthe illingnactionby the; ventingdevice-5r` 1 f [Although theartrelating to fllling1an`d venting devices is repletewith structures designedfto i limit `the amount of water to be added tothe fcll fora storagebattery' ofthe lead acid type, satisL factory ailingv andi venting device fm "fumu the pixrposesetforth, which,j;at1 the same time. is?-A simple in operationand easy `to;manufacture fis` n level inthe individual *cellsis predette'rminedYdurl` f YCII still warr'iting` in\tl 1e`a.rt, 'Thisisparticularlytriie at `thepre'senttimewlien the trend'is toA position tl'iestoragebattery under tbe hoodloffthe ,anto-e Amotive engineinasmuch `as a'vsperiluityiof elec? vjtery is elevated under operating` conditions. #The b'atterybeing mountedfat a relatively elevated position under the hbdof Athe"automobilecauses fthe overowlwto splash down"up`on` the VworkingV mechanisnisof tliefatomobile,particularlyithe i relatively ``exposed parts ofrtlie 'insulationof `the electrical cables etci,`iwhe`reby tnefinsulationl-'is u 'trolyte'intlie cell will tend to cause an overilowg] K `and,splashing when `the temperatureoflthe bat?- destroyed tobause-abrealfdowriof `the ignition systemzl Ther-lipresentginvetionhis designed to prevent the mung ofthe `battery beu beyond a predetermined point; fand, '@atgtlie same Vfti'lfne; 'to

jing an enclosed-chamber the `upper, end'ofv the ing the operating coriditilohsof Vthecell, so'asto allow the escape of "gases given foi by 'the elec- `tipivte during the charging andjdischgrgingf op- 1 fcelllwhichvisadapted to entrai) lii'fov'er'tne elec-v :xili'olyte` ritiringfthefilling;loperationy of.` the cell to Vglpi-event'the-ini'ther additinlot watertothe'cell; -The enclosed-spacefisj-however. `atthe saine time,

.capable oi Abeing vented to lthe atmosphere 5 drerationsfoi the cell;` Amanallyoperatedl'valve f n cap to open and lclosetzhe vent meansat selected times; more `paiticlilmly` to open the vent `'rnear'is I i when thecap is in closed position Yand" to `close the vent means when the rcapis removed 'toflvgke ready .for tnenlling 4operation. f

"\ l11715, thereforejafprincipal-'Objectief tl'isf-in- `iveiition"to provide `ailllin and venting device fior facilitate sevicingoi `the battery byPenaVblinl` attendant to Vaddjwatei" and obtaina unifforni'level dobse i ReferringtoFigure Voffe, storage-battery of` the? lead'acidtype isilhis-v `tratedwbeing `out away Atoshowonly the essential detaillsfofthisinvention; ''I'hecell is`e`nclosed in a fnsual` container` l'ilwhich iis-provided with` an 'upper-closure platel I cemented` in position in any Vsuitable!n'ian'rer' as is viellkxiown .in

-fagcidelectrolytenon; fthefcell dring Voperating 'conditions @thereof issiibsnamtmiiy @wim-ed.'

'It is a. 4ftiitier object; (if` this invton `i30 "`p0 'vvide'f' aj filling and? venting [device` i for a 'storage betten/,ceu'ihfwhien ari enclosed-spaces pro;- Ivid'ed labove the lelectrolytehai/ing a" controllable i ventnieariswhich, Vliirng the l-lin'goperationgis closed'to l"eritrapa-iriii the enclosed" spacef tqpref f electrolyte during? tbe lling Vent "the `lei/ 21? @ff Y ope 'tionf to bei raise above@ ypredetei-inine,d

by the vpositioning of tlifclgisiire-'capjtoallow the battery which of verysiniple-constructiom?so fas toy ebviate "service dilflicultis-lp the leld (dur- `ftiine;"to-provideai structure vwhich is' capable of t being fabricated at a minimunicost.` f f -jOtli'er objects and advantages-of 'this invention relating to. thefarrangementfoperation land .functionl ofthe `related elements ofithe" structzurefto` various vdetails of constrnctiom vto' combinations vof parts and to economiesilof" manufacture, will be apparent 'tothose skilled in the"fa1ftuponcon-4 sideration Yof-ftne followingf" description *andi `appended claimsreferencerbeing had-to tneaccompnying 'drawing formingv `afriaxt oithis specificationwhrein like referencejcliaracters designate i orrespondingparts'inV theseveralviews;

Figure-ris an elevational View 'infsect'iom snow i `theartfand neednot'be described'in detaili" Atia convenient "location Jin 'the `cell, vprefervabl'yk 'at a.

centralylocationfafhollowfintegraltboss I2 is ,pro-` jvided.l whicn extends :upwardly Y and' outwardly A vided"at afjconcentri location with trie-boss. ,n i @depending Vannular skirt I3" whosefdia# il l 2,328,223

with integral guide means projecting into the chamber, a threaded plug having an outlet vent to closethechamber, and integral means pro- Y jecting from the chamber walls and cooperating to open and close the chamber selectively by` cooperating with threads formed inthe Wall of the chamber, a ridge formed in the floor` of the chamber the apex of which extends between the guide means, alpair of plane surfacesformed in` the floor of the chamber adapted to transect in `the ridge, one of the plane surfaces "distal `from the ridge being providedwith an aperture through theoor of the chamber for communication from i the chamber with the interior of the enclosure above the level of the predetermined level of the electrolyte,` and avalve memberhaving at least one flat side pivoted on the ridge, said valve member being slotted at its sides Vto loosely embrace the guide` means and provided with a raised with the valve member to maintain the valve member in centered relation with the` chamber` to prevent binding with the walls thereof. 3. Ina, device of the class described, a battery mcell having anair-tight enclosure to contain electrolyte at a predetermined level, a chamber `formed inthe upper wall ofjthe enclosure, a `depending f tubular portion `opening at substani tiallythe predetermined level of the electrolyte portion on one side of the slots, and being j adapted by gravity to cooperate by its nat side vwith the plane surface having `the aperture when the closure plug is removed to seal the` aperture and with the other plane under the influence of the plug by thrustagainst the raised portion of y i the valve member when the plug is in closed position to open the aperture and allow the escape ofgasformed above the electrolyte.`

2, In a device of the class described, a battery cell having an air-tight enclosure to contain elec-l trolyte at a predetermined level, a chamber formed in the upper wall of the enclosure, a tubular portion deperidingfrom` the floor of the chamber and opening at substantially the level of the electrolyte, a closure and venting cap removably positioned ontthe exterior portion ofthe chamber and adapted to be removed manually fr,

for filling the enclosure to the predetermined placingthe enclosure in communication with the chamber, 4a closure and venting cap removably positioned on the upper portion of the chamber and adapted to be manually removed for lling the enclosure with water to thel predetermined level by trapping air inthe enclosure above the opening of the depending portion to determine o the amount of water added, an elevated ridge formed in the i'loor of'the chamber to provide a pivotv means, a pair of planar surfaces :forming a part of the floor of the `chamber adjacent diametrically opposed sides thereofjand transecting inthe elevated ridge Iat a point displaced from the center of the chamber, rone surface of relay tively small `area distal from the `ridge being pierced with an aperture to obtain communication between the chamber and the enclosure at a point above the predetermined level ofthe electrolyte to allow escape of entrapped air, the other surface terminating in the pivotal ridge, a perlevel with water, whereby air entrapped above the opening of the depending portion determines the amount of Water added, a pair of planar surfaces formed in the floor of the chamber transecting to form an `obtuse angular ridge, one of the planar surfaces being provided with an aperture in communicationrwith the enclosure, a perforated valve memberv having at least one fiat` side adapted to` tilt on the ridge to cooperate` by its flat side `with ,Y the planar surfaces successively, with one planar- 'i surface by gravityto close .the aperture forming a vent for the entrapped air whenf'the cap is removed `from the ,chamber and `with the other planar vsurface by` the laction of the cap against the action `oi? gravity whenthe cap is driven home forated valve member having at least one flat` side adapted toiturn on the pivotalridge to cooperate with the planar surfaces successively, said'valve cooperating with the surface having `the aperture under the influence of gravity to close theaperture and prevent escape of entrapped air during the filling operation, said valve cooperating with the other planar surface under the inuence of the cap against the action of gravity when the cap is driven home to closed position to allow entrapped air and gases to esi rotating in the chamber.

LESLIE H. ivnDDLn'roN. 

